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Numerical Investigation Of Thermal-Hydraulic Performance Of Printed Circuit Heat Exchanger With Different Fin Shape Inserts, Ali Aljelawy, Amer Aldabbagh, Falah Hatem Mar 2026

Numerical Investigation Of Thermal-Hydraulic Performance Of Printed Circuit Heat Exchanger With Different Fin Shape Inserts, Ali Aljelawy, Amer Aldabbagh, Falah Hatem

Engineering and Technology Journal

The printed circuit heat exchanger is one of the most recent important heat exchangers, especially in the nuclear power plant and aerospace applications, due to its very compact geometry and small print foot. This paper presents a 3D numerical investigation of the thermo-hydraulic performance of PCHE with a new non-uniform channel design configuration. The new channel design consists of two different fins and shape inserts: the diamond and biconvex shapes. The influence of two design parameters on the heat exchanger performance was studied and optimized, the longitudinal and transverse pitch length (Pl) and (Pt). Air with constant properties as the …

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Design And Implementation Of A Smart Greenhouse Automated And Conditioned By Solar Power System, Sura Hassan, Abdullateef Jadallah, Ghassan Bilal Mar 2026

Design And Implementation Of A Smart Greenhouse Automated And Conditioned By Solar Power System, Sura Hassan, Abdullateef Jadallah, Ghassan Bilal

Engineering and Technology Journal

Photosynthesis requires additional energy. Such energy can be obtained by building a greenhouse, which traps sunlight's heat. The primary challenge in greenhouse growing is stabilizing temperature swings. Adapting conventional heating and cooling systems can provide additional energy to the greenhouse. In the greenhouse, solar energy is a vital energy source that is directly connected to the power supply. The greenhouse control systems have been adapted and implemented to meet the demands of plant cultivation due to wireless automation, design, control, and monitoring services. This study provides an effective automation system for greenhouses. It lowers the power, leads to consumption, and …

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Modal Analysis Of Specific Composite Sandwich Structures, Mustafa Al-Khazraji, Sadeq Bakhy, Muhsin Jweeg Mar 2026

Modal Analysis Of Specific Composite Sandwich Structures, Mustafa Al-Khazraji, Sadeq Bakhy, Muhsin Jweeg

Engineering and Technology Journal

Composite sandwich structures are gaining attention due to their inherent properties, such as lightweight, low density, and high strength. The forced vibration response of these structures was studied experimentally to investigate the effects of external loads on these structures. In this work, four composite sandwich structures were manufactured using carbon fiber, glass fibers, and foam and tested on a specially designed vibration test rig by hitting the specimen with an impact hammer. The response was recorded by an accelerometer attached to the specimens. The accelerometer signal was amplified, and the input and output signals were transferred to LABVIEW via a …

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Heat Pipe Thermal Performance Analysis By Using Different Working Fluids, Ali Soud, Qusay Abdul Ghafoor, Akeel Nazzal Mar 2026

Heat Pipe Thermal Performance Analysis By Using Different Working Fluids, Ali Soud, Qusay Abdul Ghafoor, Akeel Nazzal

Engineering and Technology Journal

This study investigated the thermal performance of the heat pipe and conducted on the effects of working fluids with wick and vertical position. The experiments were conducted using a copper heat pipe with ) a 20.8( mm inner diameter, and the length of the evaporator, the condenser, and the adiabatic regions were 300 mm, 350 mm, and 300 mm, respectively. The working fluids selected were water, Methanol, Ethanol, and different binary mixtures (50: 50) %, (30: 70) %, and (70: 30) % mixing ratios. The filling ratio for all working fluids remained constant with the value of  50% of the …

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Epoxy-Nanoceramic Composites For 5g Antennas, Hasanain Altalebi, Alaa Atiyah, Saad Farid Mar 2026

Epoxy-Nanoceramic Composites For 5g Antennas, Hasanain Altalebi, Alaa Atiyah, Saad Farid

Engineering and Technology Journal

Epoxy–nanoceramic composites of BiVO4 (BVO), LaNbO4 (LNO), and Li6Mg7Ti3O16 (LMT) were prepared using the solvent mixing method. The ceramic nano-fillers volume fractions were (5, 8, 10, and 12%). X-ray diffraction (XRD) and Atomic Force Microscopy (AFM) were used to investigate the crystal structure and size distribution of nanoceramics, respectively. The dielectric constant and loss tangent were measured in the frequency range of (4-8) GHz. The measurement technique was the waveguide approach via a Vector Network analyzer (VNA). The effect of the volume fraction of ceramic fillers on the dielectric constant and loss tangent of the composites at 5.28 GHz (5G) …

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Supplier Ranking In Dental Sector Using Integrated Fuzzy (Ahp-Topsis), Asma Mohammed Ali, Allaeldin Kassam Mar 2026

Supplier Ranking In Dental Sector Using Integrated Fuzzy (Ahp-Topsis), Asma Mohammed Ali, Allaeldin Kassam

Engineering and Technology Journal

Choosing a suitable supplier of materials and equipment in the healthcare sector is essential because it directly affects the patient's health and the organization's effectiveness and quality of services. Moreover, studies on supplier ranking are few in the field of health, particularly in the dental sector. For this purpose, an integrated fuzzy (AHP-TOPSIS) model has been developed for supplier ranking in the dental sector. The F-AHP is used to evaluate the importance of criteria, and then the F-TOPSIS method is applied to the supplier ranking process. A real case study is conducted on dental composite filling suppliers. Six evaluation criteria …

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Investigation Of Compression And Hardness For Uhmwpe Bio-Composites As Internal Bone Plate Fixation, Tamara Kadhim, Jawad Oleiwi, Qahtan Hamad Mar 2026

Investigation Of Compression And Hardness For Uhmwpe Bio-Composites As Internal Bone Plate Fixation, Tamara Kadhim, Jawad Oleiwi, Qahtan Hamad

Engineering and Technology Journal

Bone plates are essential for bone fracture healing because they modify the biomechanical microenvironment at the fracture site to provide the necessary mechanical fixation for fracture fragments. This paper addresses the use of composite bone plates in healing long-bone fractures such as transverse fractures of the femur. However, stress shielding in the bone due to metal plates can be reduced by designing implants with Bio-composites that involve Ultra high molecular polyethylene reinforced (UHMWPE) with Nano hydroxyapatite (n-HA) and Nano titanium dioxide (n-TiO2) particles at different weight fraction (0,1.5,2.5,3.5and 4. 5%) and 5% of carbon and Kevlar fibers. FRIT spectrum was …

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Improving Fatigue Corrosion Resistance Of Turbine Blades Using Laser Processing, Zaman Abdulwahab, Sami Jafar, Sami Ajeel Mar 2026

Improving Fatigue Corrosion Resistance Of Turbine Blades Using Laser Processing, Zaman Abdulwahab, Sami Jafar, Sami Ajeel

Engineering and Technology Journal

The present paper investigates the nanomaterial coatings effect on turbine blades by laser processing. The present paper explores the impact of laser cladding parameters on the corrosion behavior of the resulting surface. Powders of Inconel 600 were deposited on the steel substrate. The surface can be thought of as the most important part of every engineering component. Unlike the rest of the component's volume, the surface is exposed to wear and becomes the place where most cracks form and corrosion initiates. Corrosion is one of the most harmful problems affecting turbine blades. In the current investigation, coating nanomaterials, namely Inconel …

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An Investigation On The Effect Of Carbon Nanoparticles On The Properties Of Carbon Brushes, Ahmed Alasady, M. Mohammad, Suleyman Basturk Mar 2026

An Investigation On The Effect Of Carbon Nanoparticles On The Properties Of Carbon Brushes, Ahmed Alasady, M. Mohammad, Suleyman Basturk

Engineering and Technology Journal

The demand for carbon brushes with specific properties and improvements in production economics in recent years has led to increased interest in metal-graphite composites. Metal matrix composites are considered excellent materials to obtain properties superior to those of the constituent phases and meet the specific requirements of material application. In the present study, we suggested a new composite material by utilizing nanomaterials to improve the properties of metal-graphite composite material usually used as carbon brushes. This has been achieved by adding different percentages of 0.1-0.5wt % of carbon nanotubes, carbon nanospheres, or both to the metal matrix composite. The samples …

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Nanocatalyst For The Degradation Of Plastic Waste To Produce Paints, Shams Almutalabi, Mohammed Alzuhairi, F. Hashim Mar 2026

Nanocatalyst For The Degradation Of Plastic Waste To Produce Paints, Shams Almutalabi, Mohammed Alzuhairi, F. Hashim

Engineering and Technology Journal

Recycling consumed commercial polymers is considered a highly important issue that chemists and engineers must take care of to develop the proper recycling techniques. The main objective of this study is to find a radical solution to the problems of plastic waste by recycling plastic waste (water bottles) and studying the effect of the produced Degraded Polyethylene Terephthalate (DPET) on the properties of paints. DEPT was added in six quantities to the paint mixture (1, 3, 4, 5, 7, and 14 grams). The paints were evaluated using various tests, including scanning electron microscopy (SEM), viscosity, adhesion, brightness, color, ultraviolet reflectance, …

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Effect Of Adding Mgo On Microstructure Of Zirconia Toughened Alumina (Zta) Composite For Medical Applications, Alaa Taeh, Farhad Othman, Alla Abdul-Hameed Mar 2026

Effect Of Adding Mgo On Microstructure Of Zirconia Toughened Alumina (Zta) Composite For Medical Applications, Alaa Taeh, Farhad Othman, Alla Abdul-Hameed

Engineering and Technology Journal

Zirconia toughened alumina (Biolox delta) is a new-generation ceramic with four times the strength of alumina alone, used in artificial joints. The composite ZTA, consisting of 82 wt. %Al2O3, 17 wt. % ZrO2, 0.5 wt. % Cr2O3, and 0.5 wt. % SrO, was made using the sol-gel process, starting with salts. To investigate the effects of MgO on the ZTA microstructure, two concentrations (0.25 and 0.5 wt. %) of MgO were added to biolox during gelation to study the ZTA microstructure. Powders were sintered in the air for 2 hrs. at 1450 ºC. X-ray diffraction (XRD), scanning electron microscopy (SEM), …

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The Effect Of Infill Pattern On Tensile Strength Of Pla Material In Fused Deposition Modeling (Fdm) Process, Maria Jasim, Tahseen Abbas, Abdullah Huayier Mar 2026

The Effect Of Infill Pattern On Tensile Strength Of Pla Material In Fused Deposition Modeling (Fdm) Process, Maria Jasim, Tahseen Abbas, Abdullah Huayier

Engineering and Technology Journal

Fused deposition modeling (FDM) is an additive manufacturing (AM) process often used to build geometrically complex prototypes and parts. It is becoming more popular since it improves products by eliminating the need for high-priced equipment. Materials, printing methods, and printing variables all impact the mechanical characteristics of printed items. The process parameters of FDM affect the parts' quality and functionality. This study examines the influence of different infill patterns on test specimens made of polylactic acid (PLA) tensile strength. Total of 10 different infill patterns (IPs): Grid, Lines, Triangles, Tri-Hexagon, Cubic, Gyroid, Zig-zag, Concentric, Octet, and Cubic subdivision were taken …

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The Effect Of Ceo2 Addition On Transformation Temperatures And Wear Resistance Of Cu-Al-Ni Shape Memory Alloys, Dina Hammadi, Raad Ahmed Adnan, Mohammed Al-Sarraf Mar 2026

The Effect Of Ceo2 Addition On Transformation Temperatures And Wear Resistance Of Cu-Al-Ni Shape Memory Alloys, Dina Hammadi, Raad Ahmed Adnan, Mohammed Al-Sarraf

Engineering and Technology Journal

SMAs can switch from one crystallographic structure to another in response to temperature or stress stimuli. When SMAs are exposed to mechanical cyclic stress, they can absorb and discharge mechanical energy by experiencing a reversible hysteretic shape change. SMAs are widely used for sensing, actuation, impact absorption, and vibration damping. This work studied the effect of  CeO2 addition on the transformation temperature and wear resistance of Cu-Al-Ni SMAs. WhereCeO2 was added at different percent’s 0.5, 1, and 3 wt% to the base alloy, followed by casting and homogenization at 900oC. Some tests were carried out: Differential scanning calorimeter, Optical Microscope, …

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Investigating The Effect Of Different Parameters On Physical Properties Of Metakaolin-Based Geopolymers, Ahmed Abed Al-Jabar, Hanna Al-Kaisy, Sarmad Ibrahim Mar 2026

Investigating The Effect Of Different Parameters On Physical Properties Of Metakaolin-Based Geopolymers, Ahmed Abed Al-Jabar, Hanna Al-Kaisy, Sarmad Ibrahim

Engineering and Technology Journal

Recently, geopolymers have received widespread attention due to their ability to completely replace ordinary cement with better efficiency, lower cost, and less damage to the climatic environment. This paper aimed to prepare MK-based geopolymer cement at ambient temperature with different alkaline activators and processing parameters. XRD, PSA, DTA-TGA, SEM, and other techniques have characterized the prepared samples. ANOVA test was employed to identify the main effect of the processing parameters. Results showed that the incorporation of potassium ions has a negative effect on the physical properties of GP, in which the presence of such ions tends to decrease the density …

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Improvement Of Erosion Resistance Of Aluminum- Copper Alloy Type 2024 By Plasma Nitriding, Mohammed Maseekh, Ali Ataiwi, Jamal Dawood Mar 2026

Improvement Of Erosion Resistance Of Aluminum- Copper Alloy Type 2024 By Plasma Nitriding, Mohammed Maseekh, Ali Ataiwi, Jamal Dawood

Engineering and Technology Journal

To increase the erosion resistance of 2024 Al alloys, plasma nitriding surface treatment was used. Nitrogen and argon gases are injected into an evacuated chamber until the pressure reaches 15 Pa. The process requirements for normal plasma nitriding were heating at 440˚C for 8 hours, low voltage of 650 V, current of 25 mA, low gas consumption, and no air pollution. A continuous nitriding layer of AlN was formed. The microhardness reached a maximum value of 170 HV, about 3 times higher than that Al melts at, is transported upward through voids and capillaries in the AlN structures, and reacted …

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A Numerical Study Of Friction Stir Welding For Aa5754 Sheets To Evaluate Temperature Profile And Plastic Strain, Mustafa Hadi, Mohanned Al-Khafaji, Akeel Subhi Mar 2026

A Numerical Study Of Friction Stir Welding For Aa5754 Sheets To Evaluate Temperature Profile And Plastic Strain, Mustafa Hadi, Mohanned Al-Khafaji, Akeel Subhi

Engineering and Technology Journal

A full-dimensions 3-D numerical model based on the Lagrangian approach has been employed to predict the peak temperature and the plastic strain distribution in the FSW of (AA5754) joints using ABAQUS software. The material’s model utilizes the classical plasticity model in addition to defining the thermophysical properties of the alloy using JMatPro software to increase the accuracy of the numerical results. The basic variables of FSW were three rotational speeds (930, 1460, and 1860 rpm) and three traverse speeds (35, 65, and 95 mm/min).  The influence of the rotational and traverse speed on temperature profile and plastic strain has been …

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Evaluation Of Pcl Electrospun Scaffolds Concentration On Metformin Hydrochloride Release Ratio, Saja Moosa, Akram Jabur, Emad Al-Hassani, Ahmed Al-Shammari Mar 2026

Evaluation Of Pcl Electrospun Scaffolds Concentration On Metformin Hydrochloride Release Ratio, Saja Moosa, Akram Jabur, Emad Al-Hassani, Ahmed Al-Shammari

Engineering and Technology Journal

The study investigates the effect of polycaprolactone (PCL) concentration on the metformin hydrochloride (MH) release ratio of electrospun nanofiber scaffolds. Blend and emulsion electrospinning are used to produce the scaffolds. The performance of nanofibrous scaffolds was evaluated by morphology (Field Emission Scanning Electron Microscopy, FESEM), chemical (Fourier Transform Infrared Spectroscopy, FTIR), thermal (Differential Scanning Calorimetry, DSC), wettability, porosity, mechanical tests, and in vitro drug release. The average fiber diameter ranged from (189.29-2893.93 nm) according to the FESEM results, and it increased with PCL concentration. The average fiber diameter of the electrospun scaffold, prepared by the blend method (259.64±6.1 nm), is …

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The Impacts Of Calcium Ions Substitution In Hydroxyapatite With Neodymium And Zinc On Biological Properties And Osteosarcoma Cells, Suha Al-Shahrabalee, Hussein Jaber Mar 2026

The Impacts Of Calcium Ions Substitution In Hydroxyapatite With Neodymium And Zinc On Biological Properties And Osteosarcoma Cells, Suha Al-Shahrabalee, Hussein Jaber

Engineering and Technology Journal

Hydroxyapatite (HA) is one of the important biomaterials in the medical field, especially in bone treatment, because of its biological properties close to human bone. A simple co-precipitation technique was used to integrate neodymium and zinc into HA by adding neodymium nitrate and zinc nitrate as a source of substituted elements during synthesis through the wet precipitation method with controlled temperature and pH. Finally, substituted HA was sintered at 800°C after completing the biomaterial preparation. The resulting Nd-Zn/HA was globe-like with nanoparticle size. The Ca+Nd+Zn/P ratio was equal to 1.63, which is relatively close to the molar ratio of bone. …

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Obstacle Avoidance And Path Planning Of A Wheeled Mobile Robot Using Hybrid Algorithm, Tahseen Abaas, Alaa Shabeeb Mar 2026

Obstacle Avoidance And Path Planning Of A Wheeled Mobile Robot Using Hybrid Algorithm, Tahseen Abaas, Alaa Shabeeb

Engineering and Technology Journal

In the mobile robot workplace, the path planning problem is crucial. Robotic systems employ intelligence algorithms to plan the robot's path from one point to another. This paper proposes the fastest and optimal path planning of the wheeled mobile robot with collision avoidance to find the optimal route during wheeled mobile robot navigation from the start point to the target point. It is done using a modern meta-heuristic hybrid algorithm called IPSOGWO by combining Improved Particle Swarm Optimization (IPSO) with Grey Wolf Optimizer (GWO). The principal idea is based on boosting the ability to exploit in PSO with the exploration …

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Parametric Optimization Of Laser Conduction Welding Between Stainless Steel 316 And Polyethylene Terephthalate Using Taguchi Method, Maraw Khioon, Kadhim Hubeatir, Mohanned Al-Khafaji Mar 2026

Parametric Optimization Of Laser Conduction Welding Between Stainless Steel 316 And Polyethylene Terephthalate Using Taguchi Method, Maraw Khioon, Kadhim Hubeatir, Mohanned Al-Khafaji

Engineering and Technology Journal

A pulsed Nd:YAG laser with a fiber optic delivery system was used to accomplish a dissimilar joining of 316 stainless steel (SUS316) to polyethylene terephthalate (PET). Laser Conduction Welding (LCW) was applied as a welding technique to achieve a lap metal/polymer joint by applying the laser from the metal side. The heat was transferred from the metal layer to the polymer layer, which caused the melting and then solidifying of the polymer at the interface. The effect of three welding parameters, laser energy density, pulse duration, and welding speed, on joint force, was studied and discussed. To measure the joint …

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Characterization Of The Efficiency Of Photo-Catalytic Ultrafiltation Pes Membrane Modified With Tungsten Oxide In The Removal Of Tinzaparin Sodium, Reham R. Abdullah, Kadhum M. Shabeeb, Aseel B. Alzubaydi, Alberto Figoli, Alessandra Criscuoli, Enrico Drioli, Qusay Alsalhy Mar 2026

Characterization Of The Efficiency Of Photo-Catalytic Ultrafiltation Pes Membrane Modified With Tungsten Oxide In The Removal Of Tinzaparin Sodium, Reham R. Abdullah, Kadhum M. Shabeeb, Aseel B. Alzubaydi, Alberto Figoli, Alessandra Criscuoli, Enrico Drioli, Qusay Alsalhy

Engineering and Technology Journal

One of the polymeric membranes' main limitations is their susceptibility to fouling, lowering the membrane's performance with time. Therefore, incorporating nanomaterials in polymer matrices has attracted great attention in wastewater treatment applications. It's a promising approach for enhancing membrane hydrophilicity and performance.  Herein, ultrafiltration nanocomposite membranes were synthesized by applying the phase inversion method through immobilizing (0.1-0.4 wt.%) tungsten oxide (WO2.89) nanoparticles in a polyether sulfone (PES) matrix. Membrane's anti-fouling performance was evaluated against tinzaparin sodium. The data showed that the pure water flux improved with increasing nanoparticle loading, reaching its optimum value of 54.9 kg/m2 h at 0.4 wt.% …

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Microstructure And Mechanical Properties Of Zk60 Mg Alloy Processed By Cyclic Expansion-Extrusion (Cee) At Different Temperatures, Ahmed Marheb, Akeel Subhi Mar 2026

Microstructure And Mechanical Properties Of Zk60 Mg Alloy Processed By Cyclic Expansion-Extrusion (Cee) At Different Temperatures, Ahmed Marheb, Akeel Subhi

Engineering and Technology Journal

In this work, the cyclic expansion extrusion (CEE) process was applied to ZK60 Mg alloy. The correlation between the evolved microstructure and mechanical properties was investigated. The CEE process was performed at a constant ram speed (15 mm/min) and at different processing temperatures (190, 270, and 350 °C). Optical and scanning electron microscopes, X-ray diffraction instruments, Vickers hardness tester, and tensile testing machine were utilized to examine the influence of CEE processing temperature on the characteristics of ZK60 Mg alloy. The XRD analysis showed that two phases were presented in the matrix of ZK60 Mg alloy, namely α-Mg and MgZn2, …

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Investigation Nano-Coating For The Corrosion Protection Of Petroleum Storage Tanks Steel, Zainab Ali, Baha Mahdi, Ameen Thamer Mar 2026

Investigation Nano-Coating For The Corrosion Protection Of Petroleum Storage Tanks Steel, Zainab Ali, Baha Mahdi, Ameen Thamer

Engineering and Technology Journal

This work studies the protection from corrosion in the inner surface of petroleum storage tanks by applying nano-coating on the AISI1018 steel type used in these tanks. BNi-2 alloy, used as coating layer, was deposited using the DC sputtering technique to obtain protection layers of nano-coating. The cyclic potential dynamic polarization technique is used to study and evaluate the resistant metal to localize corrosion, for example, pitting and crevice corrosion. The samples were evaluated in a 3.5% NaCl aqueous solution using the polarization method to determine the corrosion rate. The input parameters of deposition included ion current 16 mA, vacuum …

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Nonlinear 3d Finite Element Model For Round Composite Columns Under Various Eccentricity Loads, Dara Mawlood, Serwan Rafiq Mar 2026

Nonlinear 3d Finite Element Model For Round Composite Columns Under Various Eccentricity Loads, Dara Mawlood, Serwan Rafiq

Engineering and Technology Journal

Composite columns are often used in constructing high-rise structures because they can reduce the size of a building's columns while increasing the usable area in the floor plan. This research aimed to develop a nonlinear 3D finite element analysis model using the ABAQUS, version 6.13-4, of various round composite column designs with varied multi-skin of tubes for solid and hollow columns subjected to various eccentricity loads (90, 180 mm). Extended data to another 12 specimens of composite columns by numerical method, based on six references experimental data of composite columns. The results of ABAQUS data in this study show that; …

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Dynamic Response Of Deepwater Pile Foundation Bridge Piers Under Current-Wave And Earthquake Excitation, Riyadh Alsultani, Ibtisam Karim, Saleh Khassaf Mar 2026

Dynamic Response Of Deepwater Pile Foundation Bridge Piers Under Current-Wave And Earthquake Excitation, Riyadh Alsultani, Ibtisam Karim, Saleh Khassaf

Engineering and Technology Journal

Pile foundation bridges are structures extending in the middle of the sea, so they are subject to currents, waves, and earthquake forces. This article presents a hybrid simulation that was used with input excitations of different current velocities, wave properties, and earthquake amplitudes to assess the non-linear dynamic behavior of pile foundation bridge piers. Based on the interface between MATLAB and ABAQUS software, the general formulations of fluid-structure interaction (FSI) under combined current-wave and earthquake loads are derived. Hydrodynamic and earthquake loading is consistently introduced by creating synthetic time histories of combined current-wave actions and spatially variable ground motion. The …

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Hydrodynamic Model-Based Evaluation Of Sediment Transport Capacity For The Makhool-Samarra Reach Of Tigris River, Ala Nama, Ali Abbas, Jaafar Maatooq Mar 2026

Hydrodynamic Model-Based Evaluation Of Sediment Transport Capacity For The Makhool-Samarra Reach Of Tigris River, Ala Nama, Ali Abbas, Jaafar Maatooq

Engineering and Technology Journal

This paper implemented an HEC-RAS-based steady two-dimensional hydrodynamic model to evaluate the hydraulic characteristics and Sediment Transport Capacity (STC) of the Makhool-Samarra Reach of the Tigris River, where this part is not already investigated. This model was prepared with the aid of topographical surveys, hydraulic measurements, and laboratory tests, as well as recorded data. The main findings show that the flow velocities within most of the studied reach are considered high compared to the local and worldwide flow velocity ranges in natural rivers. Also, the Toffaleti sediment transport function with the Van Rijn fall velocity and the effective depth-to-width computation …

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Ecotourist And Picnic Area Assessment Using Ahp Analytical Tools In Sulaimani– Tourism Region, Iraq, Awa Ahmad, Ako Hama, Imzahim Alwan Mar 2026

Ecotourist And Picnic Area Assessment Using Ahp Analytical Tools In Sulaimani– Tourism Region, Iraq, Awa Ahmad, Ako Hama, Imzahim Alwan

Engineering and Technology Journal

Renovation of the naturally existing area for ecotourist and investments that attracting site-visitors, picnickers and tourists for Iraq, Kurdistan Region, Sulaimani need to promote a reliable decision-making technique so as to raise the level of the tourist-based economy. In this study, the most available public well known and recognized tourist and picnic area by the people and associated governmental directories were studied and assessed for their tourism reliability and capacity. The study area of this research covered tourist area and they were forty-three (43) locations and all the related data collected, analyzed and categorized as main and sub-main criterions. The …

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Analytical Solution For The Static Bending Elastic Analysis Of Thick Rectangular Plate Structures Using 3-D Plate Theory, Festus Onyeka, Chidobere Nwa-David, Thompsom Edozie Mar 2026

Analytical Solution For The Static Bending Elastic Analysis Of Thick Rectangular Plate Structures Using 3-D Plate Theory, Festus Onyeka, Chidobere Nwa-David, Thompsom Edozie

Engineering and Technology Journal

In the current work, an analytical solution for static bending analysis of the thick rectangular plate structure was obtained using three-dimensional plate theory. First, the energy equation was formulated from the static elastic principles and transformed into a compatibility equation through general variation to get the slope and deflection relationship. The solution of the compatibility equation gave rise to the exact polynomial deflection function. In contrast, the coefficient of deflection and shear deformation of the plate was obtained from the governing equation through the direct variation method. These solutions were used to obtain the characteristic expression for analyzing the displacement …

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Mechanical Characteristics And Self-Monitoring Technique Of Smart Cementitious Mixtures With Carbon Fiber And Graphite Powder As Hybrid Functional Additives, Raid Abdullah, Ali Al-Dahawi, Hussein Zghair Mar 2026

Mechanical Characteristics And Self-Monitoring Technique Of Smart Cementitious Mixtures With Carbon Fiber And Graphite Powder As Hybrid Functional Additives, Raid Abdullah, Ali Al-Dahawi, Hussein Zghair

Engineering and Technology Journal

In this paper, the self-sensing properties of cementitious composites under compressive loads were investigated by utilizing hybrid functional fillers, which are responsible for creating an electrical network that is used to build the self-sensing capability within the traditional cement-based mixtures. Most of the previous works depict the self-sensing capability with the aid of one type of functional fillers or fibers. The present paper attempts to utilize two types of functional fillers, representing a gap filling within the subject. Four hybrid proportions of Graphite (G) (wt.%) and carbon fibers (CF) (vol.%) were introduced. These are (0.5, 1.0), (1.0, 0.75), (1.5, 0.50) …

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The Performance Of Helical Pile Under Cyclic Load Using 3d-Finite Element Analysis, Ahmed Ali, Nahla Salim, Husam Baqir Mar 2026

The Performance Of Helical Pile Under Cyclic Load Using 3d-Finite Element Analysis, Ahmed Ali, Nahla Salim, Husam Baqir

Engineering and Technology Journal

Helical piles are a kind of foundation that can withstand compression, tension, and lateral stresses. However, this kind of pile was utilized extensively globally for almost 25 years. Its behavior, particularly in Iraq, is uncertain and frightening. The current research used the finite element technique to analyze this kind of pile. The helical pile geometry was suggested to be modeled using the finite element method using the computer software Plaxis 3D The soil used is medium sandy soil. Additionally, parametric analyses were conducted. The primary parametric research examines the impact of helix number, helix spacing, helix diameter, and helix configuration …

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